(PHP 4 >= 4.2.0, PHP 5)pg_lo_tell --

Returns current seek position a of large object

Описание

int pg_lo_tell (resource large_object)

- pg_lo_tell() returns the current position (offset

from the beginning) of a large object.

- To use the large object interface, it is necessary to

enclose it within a transaction block.

Список параметров

-

Возвращаемые значения

- The current seek offset (in number of bytes) from the beginning of the large

object. If there is an error, the return value is negative.

Примеры

-

Пример 1. pg_lo_tell() example <?php $doc_oid = 189762345; $database = pg_connect("dbname=jacarta"); pg_query($database, "begin"); $handle = pg_lo_open($database, $doc_oid, "r"); // Skip first 50000 bytes pg_lo_seek($handle, 50000, PGSQL_SEEK_SET); // See how far we've skipped $offset = pg_lo_tell($handle); echo "Seek position is: $offset"; pg_query($database, "commit"); ?> Результат выполнения данного примера: Seek position is: 50000

Смотрите также

-

pg_lo_seek()

Пред.

Начало

След.

pg_lo_seek

Уровень выше

pg_lo_unlink 22222